Debugger doesn't show actual latest values if PLC program is stopped.

[Andrey Skvortsov]

After command to stop PLC program is executed, PLC program is executed one or two cycles more, but debugger subscription is already stopped and doesn't get any updated values. As a result debugger panel shows old values.

Steps to reproduce:

1. Open attached project
2. Open terminal and run standalone Beremiz service

    ./Beremiz_service.py /tmp

3. Build and transfer PLC program to runtime
4. Start program. In terminal where Beremiz service is running actual values for local variable LocalVar0.
5. Open LocalVar0 in debugger
6. Stop PLC program
7. Compare values shown in debugger and printed in terminal